Display your lists as CSV
DEMO
Here is a numeric field in the CMS, which we are outputting as a CSV-style list.
Uses WFU.
Formatting involves two parts.
First, if the number is a decimal, you decide how many decimal places you want by determining that in the designer. Select the CMS-bound text element, and choose the number of decimal places you want to show.
Second, apply a custom attribute to the element, with the format you want applied.
See known formats above, to the left.